Tool holder



Sept. 22, 1931. P'. 1 ROBERTSON TOOL HOLDER Filed July 2, 1928 3 tOol holder removed, *I

Patented Sept. 22, 1931 PETERIJMBURNER' noBnna'soN, oF MrL'roN, ONTARIO, CANADA f TooLfHoLDEB y 4 VyApplieation (le'd July: 2,

' 'lf'heprincipal objects fof thefinve'ntionfvare tol provide fa'holder for small tools such as screw driverjbits, awls, reamers', ete.,..which willihold the tools securelyand which *will be'extremely handylto u'seandwi'll enablea very'quickinterehan'ge of toolsf"V A' further and important object 'is toprovide sets of.' tools which '.m'aybev sold as small units andfmay be readily removed or l0` replaced'in the holder. u Y

The .principal feature of` the invention consists in the novel lconstruction of'a chuck and tools whereby a plurality of l individual tools 'are nestedlin vparallel 'arrangement' in -a Slotted Chuck andere' enmpatogether by' anA enclosing sleeve" Y Y y Y A further and important feature consists in theA novel form loi' member forholdinga group'oftool's as 'aunitadapted to vbe placed Vvi0 in the clamping chuekdf In the aecomp anying" drawings, Fifgure 1 is a perspective view of the tool holder complete. l

Figure V2 is a perspective View of the'hsloted Chuck end offthehaidejp with the damp.

ing sleeve removed. f i v Fi-gure 3` is a longitudinal sectional' y view of the chuckendoftheholderl f f Figure 4f'is a' perspective view of the inner Figure 5 isa perspective, vi `,Woi' the inner holder with thetoolsreniove l.`v rFigure 6 is aperspectivefriew of a modilied Viorm 0f inner holden-i f Y -Figurefis a perspective :vi nv'of form of chuck-'for the form- 'fl helder shown in Figure 6.- f -1 s s Figure`8 is a'perfspectivevie'w'o'fv oneform of shank for the'tool holdeiif' I Figure 9 is a perspective aw W a ofanother formoi" shank orthelholder. "i ,"ri

Thisk invention has been devisedlfor hol'ding small tools 'tobe used "either in la hand .holder` or a brace or drill andof the l`nature 3315 requiring quick changingfrin one bit -to' an- 1a2's.- seal no. 239,954.' y y p other so `as to have the` operating toolhel'd 'securely in axial alignment with ythe holder and thework..V i The shank .Iyisformed withv a vcylindrical end 2 which is provided witha raised thread 60 3 at its lower end;k p' The` upper end is's'lotted longitudinally'- with` a slot 4 extending across the axis 'and-having parallel sides. v The tip of 'the chuck end 2 vis* bevelledV to a 'slightly reducedend 'The inner` tool holder v(isa Usshaped metal member, Vpreferably" formed of *hardened steel which fits'snugly into the slot "4g the outer sides being .preferably curved Vtransversely 'to .conform to the curvature i of 60 the chuck end`2. "i The extremities 8 of the holder 6 are bevelled inwardly E presenting bevelledfsurface's beyond the 'be'velled surfaceVV portion'of the I chuckfend'Qf i' j Thesleeve v9 is internally threadedv atl its lower end to engage the threads 3 andan inwardlybevelled'surfa'ce v10 at the upper 1 end engages the bevelled ends V8of the Uf i holderito press'them'in'wardly. l70 v*TheV tools orbits 11 are'square in cross y'section and are of the samelwidth "as the holder 6 and there are preferably? three of same arranged to nest together between the sides 7 of said holder;v Y'i5 VrA stud'l12isfse`cured Centrally in the botfytom ba'rof the holder 6 and. has -a cupped upper endl 13 Ato receive the pointedendlf Y ofthe bits. 'Y Y* "l the' type used as Vdrivers for square Arecessed screws having slightly tapered square ends 15`l with pyramid points.: Bits. for slotted screwsmay be used if desired and certain of the bits'arejhere shown provided with'fslot- 85 engaging ends, as indicated 'in FiguresB. 4# and 6. Als'oawlsfor othersmall toolsof va llike kind maybe employed, one of these being shownginlthe chuck in Figure 6. In themo'died form showninvFiguresG '90 The bits herein shown are principally` of .13b

and 7 the chuck 16 is formed With right angularly lcrossed slots 17 and the Ainner holder is a double U formation with the two portions arranged at right angles to fit into the crossed slots 17. rl`his form of holder' Will accommodatefive bits Which can be interchanged at Will.

It will of course be readily understood that any desired form of handle, or means for operating the holder may be used with my improved chuck and tools and in Figures 8 and 9 I shovv'tvvo forms of shanks commonly used. l

lVhat I claim as my invention is:

1. A tool holder, comprising a rigidchuck having a solid head' provided with atransverse slot in the end, said slot presenting unbroken parallelly spaced side Wallsfand being open at each side of the chuck and adapted to receive a plurality of tools having'parallel sided shanks, a Y U-shaped holder'adapted to Vfit bodilyfinto said slot and holdl said tools snuglytogethena stud eX- tjending upwardly from the bottom of saidv Ushaped holder'adapted to hold the centralt-,oolin a Vposition withv its working end projecting beyond the adjacent tools, and a ysleeve 'threaded on'said v chuck adapted to 'clamp the 'sides of said Ushaped holder against said tools and secure saidUfshaped holder rand tools in said slot.

lIn a tool, a holderhhaving a .transverse slot` openat the sides, a plurality of parallel sided` bits arranged inoontactrin said slot, a'holder for said bits arranged in said slot and engaging the outer Ysidesof the outer bits, and means forclamping,r Vsaid second mentioned. holder. and saidbits in .said slot. A'toolholder, com rising arigid head slotted transversely, sai slot presenting unbroken,parallellyfspacedjside Walls and beingV open at each side of the head and adapted to'reoeive a group of parallel-sided tools, clampingimeans positioned insaid slot for engagingv the outward. sides of the outer tools 4in said slot, and threaded means engaging said Vclamping `means. for clamping saidtools into a rlgld unit insa-1d slot;-l

1.4., A tool holder, comprising a.. rigid head slotted transversely, said" slot presenting. unbroken parallelly-spacedside Walls andbeing open at each side of thehead and adapted to receive a groupof parallel-*sided tools. a holder fitting in said slot and sup.-I

portingzsaidrtools therein; and presenting parallelly spaced plane surfaces engaging the outward parallel jsurfacesiof. the outerf tools in said slot, "and Vmeans' co4operating yvith V'said second.v mentioned holder for 'clamping thesecond vmentioned holder and tools into-af rigid unit in saidA slot. V

5, ,A tool holder,comprising rigid head i slottedtransversely, said slotfpresenting'um broken parallelly-spaced sidewalls, andfbeing openV ateachside of.'V the head and.

adapted to receive a group of parallel-sided tools, a holder fitting in said slot and supporting said tools therein and presenting parallelly spaced plane surfaces engaging v the outward parallel'surfaces of the outer tools in Vsaid slot, said second mentioned ,f 6, Atool holdenoomprising arigid head slotted transversely, said slot presentingA .unbroken parallelly-spaced side Walls and being open at each side of the head and adapted-to receive a group of parallel-sided tools, amember fitting in said slot having parall'elly,spaced sidearms adaptedto normally hold the tools snugly together in said slot, the ends of saidarms rojectingfrom saidfslot and being. bevelle and a sleeve threaded on said slotted head and having a bevelled surface engagin the bevelled ends of said arms to Iock'sai Vmember and tools together in a rigid unit'in said slot. 7. A tool holder, comprisin a rigid head, slotted transversely, said s otv presenting unbroken parallell -spaced side walls and being open. at eac sideof the Ahead and adapted tov receive a group kotparallelsided tools, a Ushaped holder titting snu ly into said slot between thevv parallel yWas thereof to hold the tools Vsnugly together, and `a sleeve; threaded on said head. engagingV the vlsides. of said U-shaped holder to hold it in said slot and clam said'tools kand U-shapedholder( into a rigid vunit in said slotzny .Y .Y

8. A tool holder,comprising a rigid head slotted transversely, vsaid slot presentin' unbroken parallelly-spaced side Walls an being open at each side of the', head and adaptedto receive va. grou 5 of ,parallelsided tools, aholder fitting y1n said slot and supporting said. toolstherein and presenting parallelly spaced plane surfaces engagingthe out-Wardl parallel surfaces of the outer tools in said `S lota stud at the bottom of said vsecond mentioned holder disposed centrallybetweeu the plane surfaces of said second mentioned ,holder and ada ted to cooperate with thercentral tool of t e group to support samein its Working of said second mentioned tool holder, andI means for forcing said second mentioned holder and tool into gripping contact to A form a rigid unit thereof in said slot. PETER LYMBURN ROBERTSON'. 

